ASTROSAT CZTI

Data Quality Report

Orbit 11573

Creation date: 2024-06-27T16:15:15.711293
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_112T01_9000001698_11573cztM0_level2.evt modeM0/AS1A04_112T01_9000001698_11573cztM0_level2_quad_clean.evt
Size (bytes)1,431,141,120217,728,000
Size1.3 GB 207.6 MB
Events in quadrant A13,660,6791,347,970
Events in quadrant B12,359,5301,366,771
Events in quadrant C7,285,5371,388,508
Events in quadrant D8,906,1021,335,370

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03420
B03420
C03420
D03420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0521715
B0484554
C0337674
D0386814

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1674813738.197994%
B1674815799.427991%
C16748470.280631%
D167483081.839026%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 18199 16753 767 767 4.21% 4.58%
B 18199 16753 908 908 4.99% 5.42%
C 18199 16753 0 0 0.00% 0.00%
D 18199 16753 177 177 0.97% 1.06%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 5 5818743 15746.12 1833 1791 369.4
A 1 162 247405 664.86 1833 1791 369.4
A 1 178 139572 372.96 1833 1791 369.4
B 4 239 3217957 9076.88 1850 1800 354.3
B 3 64 909474 2561.7 1850 1800 354.3
B 15 255 444344 1248.98 1850 1800 354.3
C 13 61 13921 27.98 1861 1866 430.9
C 8 128 12163 23.9 1861 1866 430.9
C 9 54 7836 13.86 1861 1866 430.9
D 5 222 463479 1054.19 1841 1786 438.0
D 10 253 395614 899.23 1841 1786 438.0
D 2 120 371714 844.66 1841 1786 438.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter